<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>多个样式表</title>
  <style>
    h1 {
      color: orange;
    }
  </style>
  <link rel="stylesheet" type="text/css" href="mystyle.css">
</head>
<body>

<h1>这是一个标题</h1>
<p>本文档的样式是外部样式表和内部样式的组合。</p>

</body>
</html>